Buy AGON - The Mysterious Codex (Trilogy) PC Key

Looking for a cheap AGON - The Mysterious Codex (Trilogy) key? As of 21 Aug 2026 the cheapest key costs £0.29 at Gameseal. We compare 17 offers from 16 stores, spanning £0.29 to £7.68. In keyshops the lowest price is £0.29, in official stores it starts at £6.59. With this many sellers the gap between the extremes is often several times over, so picking the store matters more here than waiting for a sale. This game has been cheaper before, on 87% of the days we have data for. A price alert will let you know when the next drop comes. On PC you buy a key that you activate in Steam or another client, and this is the widest market we track, with more than a quarter of games carrying a keyshop offer.

Release: 18 Nov 2015
Private Moon Studios
Steam:
Mostly Positive (45)
Buy in Official Store:
-10%
£6.59
Buy in Keyshops:
-95%
£0.29
Historical low
In official stores, it was cheaper on 87% of days with data.
See price history

Official Stores (7)

DRM:
Steam
Steam
Playsum
AGON - The Mysterious Codex (Trilogy)
Windows
6h ago
DRM:
Steam
Playsum
£7.33 ~£6.59
-10%
-10% with XDDEALScopy
-10% with XDDEALScopy
Gamebillet
AGON - The Mysterious Codex (Trilogy)
Windows
20w ago
DRM:
Steam
Gamebillet
£6.99 £6.64
-5%
Steam
AGON - The Mysterious Codex (Trilogy)
Windows
2d ago
DRM:
Steam
Steam
£6.99
GamersGate
AGON - The Mysterious Codex (Trilogy)
Windows
24w ago
DRM:
Steam
GamersGate
£6.99
-10% with XDD10copy
-10% with XDD10copy
Green Man Gaming
Agon - The Mysterious Codex (Trilogy)
Windows
26w ago
DRM:
Steam
Green Man Gaming
£6.99
WinGameStore
AGON - The Mysterious Codex (Trilogy)
Windows
42m ago
DRM:
Steam
WinGameStore
~£7.31
JoyBuggy
AGON - The Mysterious Codex - Trilogy
Windows
3d ago
DRM:
Steam
JoyBuggy
£8.55 ~£7.68
-10%

Keyshops (10)

DRM:
Steam
Steam
Gameseal
AGON - The Mysterious Codex (Trilogy) (PC) Steam Key - GLOBAL
Windows
5d ago
DRM:
Steam
Gameseal
£6.99 ~£0.29
Historical Low Deal
Historical low
-95%
-17% with SEAL17XDDcopy
-17% with SEAL17XDDcopy
G2Play
AGON - The Mysterious Codex (Trilogy) Steam CD Key
Windows
16h ago
DRM:
Steam
G2Play
£8.57 ~£0.32
-96%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
Kinguin
AGON - The Mysterious Codex (Trilogy) Steam CD Key
Windows
17h ago
DRM:
Steam
Kinguin
£8.57 ~£0.32
-96%
-8% with XD8DEALScopy
-8% with XD8DEALScopy
AGON - The Mysterious Codex (Trilogy) Steam Key GLOBAL
5.0
Windows
17h ago
DRM:
Steam
Eneba
£8.57 ~£0.45
-94%
-10% with XDD10copy
-10% with XDD10copy
AGON - The Mysterious Codex (Trilogy)
5.0
Windows
5d ago
DRM:
Steam
Yuplay
£6.99 £0.48
-93%
-3% with XD3OFFcopy
-3% with XD3OFFcopy
AGON - The Mysterious Codex (Trilogy)
5.0
Windows
17h ago
Eneba
£8.57 ~£0.75
-91%
-10% with XDD10copy
-10% with XDD10copy
G2A
AGON - The Mysterious Codex (Trilogy) (PC) - Steam Key - GLOBAL
Windows
20h ago
DRM:
Steam
G2A
£6.99 £0.93
-86%
-8% with G2A8XDDcopy
-8% with G2A8XDDcopy

About AGON - The Mysterious Codex (Trilogy)

AGON - The Mysterious Codex (Trilogy) - about the game

AGON - The Mysterious Codex (Trilogy) is a point-and-click adventure game released in 2006 that compiles the first three episodes of the AGON series into a single package for PC. Players follow Professor Samuel Hunt, a historian at the British Museum, as he receives an anonymous message and a torn page from an ancient codex in 1903. This sets him on a path to investigate hidden locations and recover cursed relics known as the AGON while encountering masters of forgotten board games.

Gameplay

The core loop centers on exploration and puzzle solving in a classic point-and-click format. Players navigate detailed environments using a 360-degree panoramic system that requires clicking to move between viewpoints. Locations span the British Museum in London, snowy landscapes in Lapland, and jungle settings in Madagascar, with each area containing interactive objects, characters, and clues that advance the narrative.

Puzzles arise naturally from the story and often involve examining items, combining objects, or interpreting historical details. The game incorporates re-playable ancient board games that players can engage with during the journey, adding layers of strategy and replay value within the adventure structure. Voice acting and atmospheric sound design support the progression without requiring external references.

Game Modes

The experience operates as a single-player story campaign divided into three sequential episodes. There are no separate multiplayer options or competitive modes. Progression follows a linear path through each episode, with the ability to revisit completed sections and replay the integrated board games for different outcomes or practice.

Episode structure allows players to tackle The London Scene, Adventures in Lapland, and Pirates of Madagascar in order, building on clues and artifacts collected earlier. Save systems support pausing and returning at any point, fitting the deliberate pace of puzzle-driven exploration.

Story and Setting

The narrative unfolds in 1903 and revolves around Professor Hunt's quest prompted by mysterious forces. He begins in the British Museum, searching archives and hidden corners for leads before traveling to remote regions. The plot emphasizes historical accuracy in its depiction of locations and artifacts, with engaging characters encountered along the way.

Each episode introduces new environments and challenges tied to the overarching mystery of the AGON relics. The story integrates elements of ancient games and cultural traditions without deviating into unrelated subplots.

Visuals, Audio, and Technical Aspects

Graphics emphasize historically accurate representations of early 20th-century settings and exotic locales, rendered in a style that runs on older hardware configurations. The presentation includes authentic music and sound effects that enhance the atmosphere during travel and puzzle sequences.

Voice performances bring characters to life, supporting the story-driven focus. The title remains compatible with a range of systems listed in its original specifications, making it accessible for players interested in classic adventure titles.

Is It Worth Playing?

Steam user reviews rate the trilogy as Mixed, with 68 percent positive from 50 total reviews. Feedback highlights strengths in the intriguing plot, integrated puzzles, voice work, and the inclusion of replayable board games. Some players note the panoramic navigation can feel dated compared to modern interfaces.

This game suits fans of traditional point-and-click adventures who enjoy methodical exploration, story progression through clues, and light strategy elements from the board games. It offers a contained experience for those seeking a historical-themed single-player title without ongoing updates or additional content layers. Players comfortable with 2006-era mechanics and a deliberate pace will find the most value in completing the three episodes.

Interface:
GermanEnglishSpanish - SpainFrenchHungarianItalian
Audio:
English
Subtitles:
GermanEnglishSpanish - SpainFrenchHungarianItalian

Age rating

Unavailable
Steam:
Mostly Positive (45)

Minimum:

  • Processor: 800MHz Pentium 3
  • Memory: 256 MB RAM
  • Graphics: 32MB 3D Video Card
  • DirectX: Version 8.0
  • Storage: 850 MB available space
  • Additional Notes: DirectX compatible Sound Card

Recommended:

  • Processor: 800MHz Pentium 3
  • Memory: 256 MB RAM
  • Graphics: 32MB 3D Video Card
  • DirectX: Version 8.0
  • Storage: 850 MB available space
  • Additional Notes: DirectX compatible Sound Card
Historical low
Price history from official stores
£0.48
GamersGate
6 months ago
Price history from keyshops
£0.29
Gameseal
5 days ago

FAQ

9 questions

Before you start looking for a cheap AGON - The Mysterious Codex (Trilogy) PC key, check the essentials. Developed by Private Moon Studios. Published by M.INDIE. PC released date: 18 Nov 2015. Genres: Adventure. Categories: Family Sharing, Steam Trading Cards, Single-player.

Q

Where to buy a cheap AGON - The Mysterious Codex (Trilogy) Steam key or CD key?

Using our price comparison and verified discount codes, you can buy a AGON - The Mysterious Codex (Trilogy) key for as low as £0.29. This deal is available at Gameseal and is among the cheapest offers on the market. All keys listed on XD.deals are delivered digitally and eligible for instant download after payment. Prices already include processing fees and applied promo codes, so you always see the lowest AGON - The Mysterious Codex (Trilogy) price on PC. Check the AGON - The Mysterious Codex (Trilogy) price history to buy at the best moment.

As of our last update (we refresh Steam pricing multiple times a day), the AGON - The Mysterious Codex (Trilogy) Steam price is £6.99. You can save an extra ~6% by paying with a discounted Steam gift card.

Our price tracker covers both official retailers and key marketplaces, so you can find AGON - The Mysterious Codex (Trilogy) on sale even outside seasonal promotions. We currently detect 17 active offers from official stores and keyshops. Check the table above, compare against the historical low, and set an alert so you never miss the next price drop.

Based on our data, AGON - The Mysterious Codex (Trilogy) is not currently available on GeForce NOW. You will need to run it locally on your PC. Browse games available on GeForce NOW.

On days when both store types carried the game, the keyshop was cheaper by a median of 90%. We have recorded offers from 18 stores in total, and from 2 in the most recent reading. The spread between offers was wide: from £0.29 to £7.44. The current price is high against its own history: it was cheaper on 87% of days with data.

Yes. AGON - The Mysterious Codex (Trilogy) has an official page on the Steam Store. You can also buy a AGON - The Mysterious Codex (Trilogy) Steam key from third-party sellers. Our price comparison currently includes 16 offers with Steam DRM. Pick one to ensure your AGON - The Mysterious Codex (Trilogy) download happens on Valve's platform.

Not at this time. Valve marks AGON - The Mysterious Codex (Trilogy) as Unsupported on Steam Deck. Keep an eye on XD.deals - we track Proton updates and community fixes. Browse games that are Steam Deck Verified or Steam Deck Playable.

According to our data AGON - The Mysterious Codex (Trilogy) is not currently available on PC Game Pass, EA Play or Ubisoft+. We are still filling in the catalogues of these services, so it is worth confirming the status at the source before you decide. If you are buying, XD.deals will help you find the lowest price.

No - XD.deals is not a store. We are a price-comparison service that tracks the best AGON - The Mysterious Codex (Trilogy) deals across official stores and verified keyshops. Click "Go to Store" next to any offer and you will be redirected to the retailer's website to complete your purchase.

Best prices for AGON - The Mysterious Codex (Trilogy)

1 Gameseal Gameseal Keyshop
-95% £0.29
2 G2Play G2Play Keyshop
-96% £0.32
3 Kinguin Kinguin Keyshop
-96% £0.32
4 Eneba Eneba Keyshop
-94% £0.45
5 Yuplay Yuplay Keyshop
-93% £0.48

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